Question 1

The effects of different kinds of radiation depend on the following factors:

Accepted Answer

A) Time of exposure, wavelength 
B) Intensity, frequency, thickness of sample 
C) Distance, frequency, nature of sample 
D) Chemical composition, intensity, shielding 
A) Time of exposure, wavelength 
B) Intensity, frequency, thickness of sample 
C) Distance, frequency, nature of sample 
D) Chemical composition, intensity, shielding A

Question 2

The time in minutes in which 90% of the bacterial population will be killed at a given temperature is called the

Accepted Answer

A) generation time. 
B) thermal death time. 
C) sterilization time. 
D) decimal reduction time. 
A) generation time. 
B) thermal death time. 
C) sterilization time. 
D) decimal reduction time. D

Question 3

The two types of pasteurization typically used today are __________ and __________.

Accepted Answer

high temperature short time,ultrahigh temperature (extremely short time)
high temperature short time,ultrahigh temperature extremely short time
ultrahigh temperature extremely short time,high temperature short time
high temperature,ultrahigh temperature

Question 4

The bioassay method for testing the effectiveness of disinfectants and antiseptics on microorganisms is the ______________________.

Accepted Answer

The answer of The bioassay method for testing the effectiveness...

Question 5

Match the description below with the correct item from this list.
-Phenolic compound

Accepted Answer

A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin 
A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin

Question 6

Sterilization using dry heat requires a temperature of __________° C for a period of __________.

Accepted Answer

160-170° C,2-4 hours

Question 7

A toxic,odorless gas often used as a sterilizing agent in hospitals and dental officials is

Accepted Answer

A) ethylene oxide. 
B) carbon dioxide. 
C) carbon monoxide. 
D) propane. 
A) ethylene oxide. 
B) carbon dioxide. 
C) carbon monoxide. 
D) propane.

Question 8

Match the description below with the correct item from this list.
-Alkylating agent

Accepted Answer

A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin 
A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin

Question 9

Decontamination is defined as the

Accepted Answer

A) killing of all microorganisms in a given area. 
B) reduction or removal of unwanted chemical or biological agents. 
C) stopping of the growth of microorganisms in a given area. 
D) removal of all vegetative organisms. 
A) killing of all microorganisms in a given area. 
B) reduction or removal of unwanted chemical or biological agents. 
C) stopping of the growth of microorganisms in a given area. 
D) removal of all vegetative organisms.

Question 10

The destruction of vegetative organisms by chemical or physical methods is called __________.

Accepted Answer

The answer of The destruction of vegetative organisms by chemical...

Question 11

The autoclave uses pressurized steam at approximately __________° C and __________ psi.

Accepted Answer

121° C,15

Question 12

Food irradiation destroys the __________ of the cell.

Accepted Answer

The answer of Food irradiation destroys the __________ of the...

Question 13

All of the following are methods for food preservation except

Accepted Answer

A) Pasteurization 
B) Disinfection 
C) Irradiation 
D) Ultrahigh-temperature pasteurization 
A) Pasteurization 
B) Disinfection 
C) Irradiation 
D) Ultrahigh-temperature pasteurization

Question 14

The term to describe an agent that causes microbial growth to be inhibited,thus preventing further growth is __________.

Accepted Answer

The answer of The term to describe an agent that...

Question 15

Boiling items in water for __________ minutes will kill most vegetative bacteria and viruses.

Accepted Answer

A) 3-5 
B) 5-6 
C) 6-8 
D) 10-15 
A) 3-5 
B) 5-6 
C) 6-8 
D) 10-15

Question 16

Match the description below with the correct item from this list.
-Cationic detergent

Accepted Answer

A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin 
A) Iodine 
B) Triclosan 
C) Aldehydes 
D) Quaternary compounds 
E) Damage to DNA
F)Mercury
G)Osmotic pressure
H)Penicillin

Question 17

The lowest temperature by which all microorganisms in a particular liquid will be killed within 10 minutes is the __________.

Accepted Answer

The answer of The lowest temperature by which all microorganisms...

Question 18

Bacteria that thrive in extremely dry conditions are classified as ___________________.

Accepted Answer

The answer of Bacteria that thrive in extremely dry conditions...

Question 19

The cleaning of glassware and tableware in restaurants falls into the category of

Accepted Answer

A) degermation. 
B) sterilization. 
C) disinfection. 
D) sanitization. 
A) degermation. 
B) sterilization. 
C) disinfection. 
D) sanitization.

Question 20

The food preparation process in which not all microorganisms are killed,but the number of microbes capable of spoiling the food or causing disease is reduced,is called

Accepted Answer

A) sanitation. 
B) pasteurization. 
C) disinfection. 
D) purification. 
A) sanitation. 
B) pasteurization. 
C) disinfection. 
D) purification.

Exam 7: Physical and Chemical Methods of Control

The effects of different kinds of radiation depend on the following factors:

The time in minutes in which 90% of the bacterial population will be killed at a given temperature is called the

The two types of pasteurization typically used today are __________ and __________.

The bioassay method for testing the effectiveness of disinfectants and antiseptics on microorganisms is the ______________________.

Match the description below with the correct item from this list. -Phenolic compound

Sterilization using dry heat requires a temperature of __________° C for a period of __________.

A toxic,odorless gas often used as a sterilizing agent in hospitals and dental officials is

Match the description below with the correct item from this list. -Alkylating agent

Decontamination is defined as the

The destruction of vegetative organisms by chemical or physical methods is called __________.

The autoclave uses pressurized steam at approximately __________° C and __________ psi.

Food irradiation destroys the __________ of the cell.

All of the following are methods for food preservation except

The term to describe an agent that causes microbial growth to be inhibited,thus preventing further growth is __________.

Boiling items in water for __________ minutes will kill most vegetative bacteria and viruses.

Match the description below with the correct item from this list. -Cationic detergent

The lowest temperature by which all microorganisms in a particular liquid will be killed within 10 minutes is the __________.

Bacteria that thrive in extremely dry conditions are classified as ___________________.

The cleaning of glassware and tableware in restaurants falls into the category of

The food preparation process in which not all microorganisms are killed,but the number of microbes capable of spoiling the food or causing disease is reduced,is called

Scope of Microbiology

Chemistry of Life

Cell Structure and Function

Bacteria and Archaea

Viruses

Eukaryotic Microorganisms

Microbiological Laboratory Techniques

Microbiological Laboratory Safety Issues

Pharmacology

Antimicrobial Drugs

Infection and Disease

The Immune Response and Lymphatic System

Infections of the Integumentary System, soft Tissue, and Musculoskeletal System

Infections of the Respiratory System

Infections of the Gastrointestinal System

Infections of the Nervous System and Sensory Structures

Infections of the Cardiovascular and Circulatory System

Infections of the Urinary System

Infections of the Reproductive System

Sexually Transmitted Infectionsdiseases

Human Age and Microorganisms

Microorganisms in the Environment and Effects on Human Health

Emerging Infectious Diseases

Biotechnology

Filters

The two types of pasteurization typically used today are and .

Sterilization using dry heat requires a temperature of ° C for a period of .

The autoclave uses pressurized steam at approximately ° C and psi.